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Repairable needle pen / 可修复的针管笔

Repairable needle pen

What makes this needle pen special is that when we press our nib in and can't use it, it can be lifted out again by rotating the end of the pen. The groove at the end of the needle pen matches the bump of the pen cap, which helps rotate the tail. The pen holder needs to be partially pulled out before doing this. The inside of the needle pen is supported by a cylinder with a hole to prevent the tip 。 breaking under pressure, and the function of the hole is to immerse ink in the core.

University

成都理工大学

成都理工大学
四川成都, China

朋哲 侯,
成都理工大学